// SpryNestedXMLDataSet.js - version 0.3 - Spry Pre-Release 1.6
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//
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// Copyright (c) 2007. Adobe Systems Incorporated.
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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//
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// * Redistributions of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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// * Neither the name of Adobe Systems Incorporated nor the names of its
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// contributors may be used to endorse or promote products derived from this
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// software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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// POSSIBILITY OF SUCH DAMAGE.
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Spry.Data.NestedXMLDataSet=function(parentDataSet,xpath,options)
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{this.parentDataSet=parentDataSet;this.xpath=xpath;this.nestedDataSets=[];this.nestedDataSetsHash={};this.currentDS=null;this.currentDSAncestor=null;this.options=options;this.ignoreOnDataChanged=false;this.entityEncodeStrings=parentDataSet?parentDataSet.entityEncodeStrings:true;Spry.Data.DataSet.call(this,options);parentDataSet.addObserver(this);};Spry.Data.NestedXMLDataSet.prototype=new Spry.Data.DataSet();Spry.Data.NestedXMLDataSet.prototype.constructor=Spry.Data.NestedXMLDataSet.prototype;Spry.Data.NestedXMLDataSet.prototype.getParentDataSet=function()
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{return this.parentDataSet;};Spry.Data.NestedXMLDataSet.prototype.getNestedDataSetForParentRow=function(parentRow)
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{var xmlNode=parentRow.ds_XMLNode;if(xmlNode&&this.nestedDataSets)
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{if(this.currentDSAncestor&&this.currentDSAncestor==xmlNode)
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return this.currentDS;var nDSArr=this.nestedDataSets;var nDSArrLen=nDSArr.length;for(var i=0;i<nDSArrLen;i++)
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{var dsObj=nDSArr[i];if(dsObj&&xmlNode==dsObj.ancestor)
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return dsObj.dataSet;}}
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return null;};Spry.Data.NestedXMLDataSet.prototype.getNestedXMLDataSetsArray=function()
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{var resultsArray=[];if(this.nestedDataSets)
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{var arrDS=this.nestedDataSets;var numDS=this.nestedDataSets.length;for(var i=0;i<numDS;i++)
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resultsArray.push(arrDS[i].dataSet);}
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return resultsArray;};Spry.Data.NestedXMLDataSet.prototype.onDataChanged=function(notifier,data)
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{if(!this.ignoreOnDataChanged)
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this.loadData();};Spry.Data.NestedXMLDataSet.prototype.onCurrentRowChanged=function(notifier,data)
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{this.notifyObservers("onPreParentContextChange");this.currentDS=null;this.currentDSAncestor=null;var pCurRow=this.parentDataSet.getCurrentRow();if(pCurRow)
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{var nestedDS=this.getNestedDataSetForParentRow(pCurRow);if(nestedDS)
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{this.currentDS=nestedDS;this.currentDSAncestor=pCurRow.ds_XMLNode;}}
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this.notifyObservers("onDataChanged");this.notifyObservers("onPostParentContextChange");this.ignoreOnDataChanged=false;};Spry.Data.NestedXMLDataSet.prototype.onPostParentContextChange=Spry.Data.NestedXMLDataSet.prototype.onCurrentRowChanged;Spry.Data.NestedXMLDataSet.prototype.onPreParentContextChange=function(notifier,data)
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{this.ignoreOnDataChanged=true;};Spry.Data.NestedXMLDataSet.prototype.loadData=function()
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{var parentDS=this.parentDataSet;if(!parentDS||parentDS.getLoadDataRequestIsPending()||!this.xpath)
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return;if(!parentDS.getDataWasLoaded())
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{parentDS.loadData();return;}
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this.notifyObservers("onPreLoad");this.nestedDataSets=[];this.currentDS=null;this.currentDSAncestor=null;this.data=[];this.dataHash={};var self=this;var ancestorDS=[parentDS];if(parentDS.getNestedXMLDataSetsArray)
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ancestorDS=parentDS.getNestedXMLDataSetsArray();var currentAncestor=null;var currentAncestorRow=parentDS.getCurrentRow();if(currentAncestorRow)
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currentAncestor=currentAncestorRow.ds_XMLNode;var numAncestors=ancestorDS.length;for(var i=0;i<numAncestors;i++)
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{var aDS=ancestorDS[i];var aData=aDS.getData(true);if(aData)
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{var aDataLen=aData.length;for(var j=0;j<aDataLen;j++)
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{var row=aData[j];if(row&&row.ds_XMLNode)
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{var ds=new Spry.Data.DataSet(this.options);var dataArr=Spry.Data.XMLDataSet.getRecordSetFromXMLDoc(row.ds_XMLNode,this.xpath,false,this.entityEncodeStrings);ds.setDataFromArray(dataArr.data,true);var dsObj=new Object;dsObj.ancestor=row.ds_XMLNode;dsObj.dataSet=ds;this.nestedDataSets.push(dsObj);if(row.ds_XMLNode==currentAncestor)
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{this.currentDS=ds;this.currentDSAncestor=this.ds_XMLNode;}
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ds.addObserver(function(notificationType,notifier,data){self.notifyObservers(notificationType,data);});}}}}
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this.pendingRequest=new Object;this.dataWasLoaded=false;this.pendingRequest.timer=setTimeout(function(){self.pendingRequest=null;self.dataWasLoaded=true;self.notifyObservers("onPostLoad");self.notifyObservers("onDataChanged");},0);};Spry.Data.NestedXMLDataSet.prototype.getData=function(unfiltered)
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{if(this.currentDS)
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return this.currentDS.getData(unfiltered);return[];};Spry.Data.NestedXMLDataSet.prototype.getRowCount=function(unfiltered)
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{if(this.currentDS)
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return this.currentDS.getRowCount(unfiltered);return 0;};Spry.Data.NestedXMLDataSet.prototype.getRowByID=function(rowID)
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{if(this.currentDS)
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return this.currentDS.getRowByID(rowID);return undefined;};Spry.Data.NestedXMLDataSet.prototype.getRowByRowNumber=function(rowNumber,unfiltered)
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{if(this.currentDS)
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return this.currentDS.getRowByRowNumber(rowNumber,unfiltered);return null;};Spry.Data.NestedXMLDataSet.prototype.getCurrentRow=function()
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{if(this.currentDS)
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return this.currentDS.getCurrentRow();return null;};Spry.Data.NestedXMLDataSet.prototype.setCurrentRow=function(rowID)
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{if(this.currentDS)
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return this.currentDS.setCurrentRow(rowID);};Spry.Data.NestedXMLDataSet.prototype.getRowNumber=function(row)
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{if(this.currentDS)
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return this.currentDS.getRowNumber(row);return 0;};Spry.Data.NestedXMLDataSet.prototype.getCurrentRowNumber=function()
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{if(this.currentDS)
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return this.currentDS.getCurrentRowNumber();return 0;};Spry.Data.NestedXMLDataSet.prototype.getCurrentRowID=function()
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{if(this.currentDS)
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return this.currentDS.getCurrentRowID();return 0;};Spry.Data.NestedXMLDataSet.prototype.setCurrentRowNumber=function(rowNumber)
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{if(this.currentDS)
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return this.currentDS.setCurrentRowNumber(rowNumber);};Spry.Data.NestedXMLDataSet.prototype.findRowsWithColumnValues=function(valueObj,firstMatchOnly,unfiltered)
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{if(this.currentDS)
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return this.currentDS.findRowsWithColumnValues(valueObj,firstMatchOnly,unfiltered);return firstMatchOnly?null:[];};Spry.Data.NestedXMLDataSet.prototype.setColumnType=function(columnNames,columnType)
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{if(columnNames)
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{var dsArr=this.nestedDataSets;var dsArrLen=dsArr.length;for(var i=0;i<dsArrLen;i++)
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dsArr[i].dataSet.setColumnType(columnNames,columnType);}};Spry.Data.NestedXMLDataSet.prototype.getColumnType=function(columnName)
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{if(this.currentDS)
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return this.currentDS.getColumnType(columnName);return"string";};Spry.Data.NestedXMLDataSet.prototype.distinct=function(columnNames)
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{if(columnNames)
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{var dsArr=this.nestedDataSets;var dsArrLen=dsArr.length;for(var i=0;i<dsArrLen;i++)
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dsArr[i].dataSet.distinct(columnNames);}};Spry.Data.NestedXMLDataSet.prototype.getSortColumn=function(){if(this.currentDS)
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return this.currentDS.getSortColumn();return"";};Spry.Data.NestedXMLDataSet.prototype.getSortOrder=function(){if(this.currentDS)
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return this.currentDS.getSortOrder();return"";};Spry.Data.NestedXMLDataSet.prototype.sort=function(columnNames,sortOrder)
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{if(columnNames)
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{var dsArr=this.nestedDataSets;var dsArrLen=dsArr.length;for(var i=0;i<dsArrLen;i++)
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dsArr[i].dataSet.sort(columnNames,sortOrder);}};Spry.Data.NestedXMLDataSet.prototype.filterData=function(filterFunc,filterOnly)
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{if(columnNames)
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{var dsArr=this.nestedDataSets;var dsArrLen=dsArr.length;for(var i=0;i<dsArrLen;i++)
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dsArr[i].dataSet.filterData(filterFunc,filterOnly);}};Spry.Data.NestedXMLDataSet.prototype.filter=function(filterFunc,filterOnly)
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{if(columnNames)
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{var dsArr=this.nestedDataSets;var dsArrLen=dsArr.length;for(var i=0;i<dsArrLen;i++)
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dsArr[i].dataSet.filter(filterFunc,filterOnly);}};
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